3D Printing Info

Filament comparison

ASA-CF vs PEI 1010

Compare printing settings, strength, heat resistance, dated prices and sources.

Carbon-fibre ASA (ASA-CF) guidePEI (ULTEM 1010) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-CF comparisonsMore PEI 1010 comparisons
ASA-CF vs PEI 1010 — documented properties and sources
PropertyCarbon-fibre ASA (ASA-CF)ASAPEI (ULTEM 1010)HIGHTEMP
Market snapshot
Listing priceUSD/kg; dated snapshots$36.99/kg median; $25.00–$90.00/kg across 5 dated product listings$281.22/kg median; $195.00–$698.00/kg across 6 dated product listings
Identity & Market
Base polymer / chemistryASA reinforced with chopped carbon fibre — Formfutura's ApolloX CF10 is 10 wt%[1][2][3]Polyetherimide, ULTEM 1010 grade — the higher-temperature, food- and medical-contact PEI[4][5]
Densityg/cm³1.02 (Bambu Lab), 1.1 (Formfutura ApolloX CF10) and 1.11 (3DXTech), ISO 1183[1][2][3]1.27 (ISO 1183, 3DXTech and Prusament); 1.29 specific gravity on moulded plaques (ASTM D792, Stratasys)[4][5][6]
Typical priceUSD/kg1 kg spools cluster near 37[7][8]1 kg-equivalent spools span 195–698; the middle of the market is about 270[9][10][11][12][13]
Price range across brandsUSD/kg25–90 across brands; IEMAI 25, Ambrosia 33, Bambu Lab 37, Polymaker Fiberon 40, 3DXTech 90[14][7][8][9][15]195-698 across brands and grades; 3DXTech ThermaX PEI 1010 195 at 2 kg, IEMAI 3D 223 at 1 kg, 3D4Makers 270 at 2 kg, Prusament 292 at 500 g, Kimya 347 at 500 g, 3DXTech ESD-PEI 1010 698 at 500 g[9][10][11][12][13]
Market availability1–5Available from several mainstream brands[7][8][9][14]Niche, a handful of specialist brands[9][10][11][12]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[8][9][7]1.75 and 2.85 mm; 200 g to 2 kg spools, plus Stratasys canisters[9][12][6]
Typical applicationsOutdoor structural parts, drone and antenna mounts where stiffness and UV stability both matter[1][2]Autoclavable tooling, food-contact fixtures and parts that must hold load near 200 °C[5]
Printing Parameters
Nozzle temperature°C250–280 (Bambu Lab)[1]410 ± 10 (Prusament) — the hottest nozzle in the dataset[5]
Bed temperature°C80–100 (Bambu Lab)[1]140–160 (Prusament); 130–140 (3DXTech)[5][4]
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][16]Actively heated chamber required — Prusa specifies 90 °C[5]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]90 (Prusament)[5]
Part cooling fanFan on (Bambu Lab)[1]Not documented
Bed surface & adhesion aidPEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry[17][18]PA nylon sheet or powder-coated sheet with high-temperature glue (Prusament)[5]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s20 at Bambu Lab's 250 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[1][19]Not documented
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre reduces warping against unfilled ASA[16]Severe — heated chamber needed[5]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[17]Not documented
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[17]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[16]Expert / industrial hardware only[5][20]
Extruder requirementNot documentedA hot end rated to 420 °C, a heated chamber and a high-temperature bed; Prusa dries the filament at 150 °C for 6–8 h before printing[5]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[16]Brass fine indefinitely for unfilled grades, but brass softens near these nozzle temperatures — hardened or plated hot ends are the norm[5]
Abrasiveness1–5Highly abrasive — standard CF composite[16]Non-abrasive when unfilled[4]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for fibre-filled composites and Simplify3D a higher tendency to clog[21][22]Moderate — needs dry filament and a clean nozzle; 3DXTech lists no special nozzle concerns but a mandatory 150 °C pre-dry before every print[23]
Heat-creep / jam sensitivity1–5Slightly sensitive[18]Not documented
Hotend requirementNo special hotend required[18]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.33 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Not documented
Equilibrium moisture content at ~50 % RH%0.33 saturated at 25 °C / 55 % RH (Bambu Lab)[1]0.4 in 24 h and 0.7 in 7 days at 24 °C and 22 % RH (Prusament)[5]
Drying temperature & time80 °C for 8 h (Bambu Lab)[1]150 °C for 6–8 h (Prusament) — the hottest drying schedule in the dataset[5]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[24]Not documented
Effect of moisture on strengthNo dry-versus-conditioned figures are published; Polymaker groups the styrenics as moderate-sensitivity and absorbed water shows as bubbling and poor layer adhesion[24]No dry-versus-conditioned figures are published; 3DXTech mandates a 150 °C, 4 h pre-dry before every print because trapped water flashes to steam at these nozzle temperatures[23]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[24]Not documented
Mechanical Properties
Tensile strength (XY)MPa34 ± 3 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 48 at break and Formfutura 79 at 23 °C[1][2][3]79-95 printed in plane: Stratasys 79.2 (F900 T14) to 91.6 (F3300 N500) at break in XZ, ASTM D638; Prusament 95 +/- 3.5 at yield printed horizontal, ISO 527-1; 3DXTech quotes 56 (ISO 527)[6][5][4]
Young's modulusMPa4200 ± 270 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 5355 and Formfutura 7580[1][2][3]2300-3040 printed in plane: Prusament 2300 +/- 100 horizontal (ISO 527-1), Stratasys 2920-3040 in XZ (ASTM D638); 3DXTech quotes 2500[6][5][4]
Elongation at break%9.6 ± 1.4 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 3 at break and Formfutura 1.8[1][2][3]4.0-4.1 at break in XZ (ASTM D638, Stratasys); Prusament gives 6.6 +/- 0.7 at yield printed horizontal (ISO 527-1); 3DXTech quotes 3[6][5][4]
Flexural strengthMPa72 ± 5 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 78[1][2]128 at 5 % strain (F900 T14) and 144 at break (F3300) printed XZ, ASTM D790; Prusament 98 +/- 6.5 horizontal and 138 +/- 5.3 vertical (ISO 178); 3DXTech quotes 110[6][5][4]
Flexural modulusMPa3740 ± 130 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 5210[1][2]2910-3260 printed XZ (ASTM D790, Stratasys); Prusament 2300 horizontal and 2700 vertical (ISO 178); 3DXTech quotes 2510[6][5][4]
Charpy impact, notchedkJ/m²6.2 ± 1.4 printed XY, ISO 179, notched (Bambu Lab) — a third of unfilled Bambu Lab ASA's 19.6[1][25]3.4 ± 0.9 printed horizontal and 3.6 ± 0.4 printed vertical, ISO 179-1 notched (Prusament)[5]
Other impact dataCharpy unnotched 14.0 ± 2.2 printed XY (Bambu Lab, ISO 179), against 41.0 for unfilled Bambu Lab ASA[1][25]Izod notched 26.6-36.3 J/m XZ against 21.7-27.2 J/m ZX; unnotched 260-406 J/m XZ against 68-116 J/m ZX (printed, ASTM D256/D4812, Stratasys). Charpy unnotched 19.7 +/- 4.3 horizontal and 39 +/- 10 vertical (Prusament, ISO 179-1)[6][5]
Layer adhesion / Z tensileMPa30 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 33 against 72 in XY[1]28-37 at break (printed ZX, ASTM D638, Stratasys F900 and F3300) against 72 +/- 5 at yield printed vertical (ISO 527-1, Prusament on the Pro HT90 with a 0.6 mm nozzle and 90 °C chamber) — a fourfold spread driven by chamber temperature and bead size[6][5]
Brittleness1–5Brittle — snaps with little warning[1][2]Brittle — snaps with little warning; notched Charpy only 3.4 kJ/m²[5]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documentedShore D 83.5 (Prusa Polymers method); Rockwell M110 / R126 on extruded PEI stock (ASTM D785)[5][26]
Creep resistance / sustained load1–5Good — no creep test found; chopped carbon fibre lifts modulus to 4200 MPa against 2379–2450 for unfilled ASA[1][27]Excellent — holds load for years. Printed coupons hold 215 °C heat deflection at 1.8 MPa (ASTM D648) and extruded PEI stock is rated 170 °C long-term service[6][26]
Fatigue / repeated-flex resistance1–5Below average — no CF-grade S-N curve; notched Charpy falls to 6.2 kJ/m² against 19.6 for unfilled Bambu Lab ASA[1][25]Not documented
Elasticity / flexibility1–5Rigid[1]Rigid[5]
Z strength as % of XY%88 by tensile, 46 by flexural (printed, Bambu Lab)[1]36-40 (Stratasys ZX against XZ tensile at break, ASTM D638) against 76 (Prusament vertical against horizontal tensile yield, ISO 527-1)[6][5]
Thermal Properties
HDT at 0.45 MPa°C110 (ISO 75, 0.45 MPa, Bambu Lab) against 100 for unfilled Bambu Lab ASA[1][25]207 (Prusament, ISO 75 at 0.45 MPa) to 217 (printed XY 216.9 and XZ 217.1, ASTM D648 Method B at 66 psi, Stratasys); 3DXTech quotes 208[5][6][4]
HDT at 1.8 MPa°C102 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][25]194 (Prusament, ISO 75 at 1.8 MPa) to 215 (printed XY 215.1 and XZ 214.5, ASTM D648 Method B at 264 psi, Stratasys) — the highest heat deflection in the dataset[5][6]
Glass transition (Tg)°CNot documented209 (moulded plaque, ASTM D7426 inflection point, Stratasys); 217 (DSC, 3DXTech)[6][4]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[28]170 long-term service on extruded PEI stock, converted from 338 °F; 200 short term[26]
Thermal expansion (CTE)µm/m·KNot documented36.1 (printed XY, -50 to 60 °C, ASTM E831), falling to 29.8 over 60-205 °C; ZX gives 32.5 over -50 to 110 °C and 16.2 over 110-165 °C[6]
Flammability / UL 94Flammable; no UL 94 rating published[25]UL 94 V-0 at 1.5 mm, rated on the base resin[4]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; the acrylate rubber phase is unchanged by the fibre[29][17]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[27]Not documented
Food contactNot food safe[17]Not documented
Biodegradability / compostabilityNot biodegradable[17]Not documented
RecyclabilityNot accepted in household plastic collection[17]Not documented
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — not static-dissipative (3DXTech, ASTM D257)[2]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[30][16]Moderate — measurable VOCs and UFPs, ventilation advised. None of these polymers was in the chamber study, and all are processed far above the temperatures it covered[30]
Hazardous species emittedStyrene. Bambu Lab states ABS and ASA release harmful gases such as styrene at printing temperature, which can be toxic and cause dizziness or nausea. Azimi et al. measured styrene from every styrenic filament tested but did not test ASA itself[16][30]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[30][16]Ventilated room or enclosure recommended[30]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[2]Not documented
Post-Processing
Sanding & machiningSands well and takes filler before painting[17]Not documented
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[17]Not documented
Gluing & solvent weldingSolvent-welds with acetone[27]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works[27]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[16]Not documented
Dimensional accuracy & detailMatte fibre-filled finish hides layer lines[1]Not documented
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[31][27]Chlorinated hydrocarbons — dichloromethane and chloroform — are solvents for polyetherimide. Laboratory reagents.[32][31]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[33]Acetone, MEK, benzene, toluene and butyl acetate craze or stress-crack it; alcohols, fuels and dilute acids do not.[31][32]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[34][27]Dichloromethane is the only welding route, and it is a controlled carcinogen rather than a workshop material.[32][31]

Material entries describe families or representative grades, not an interchangeable specification for every spool. Test methods, orientations and conditions may differ. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.

Sources for this comparison

  1. Bambu Filament Technical Data Sheet V1.0 — ASA-CF Bambu Lab · 2026-08 · tds
  2. CarbonX Carbon Fiber ASA Technical Data Sheet 3DXTech · 2026-08 · tds
  3. ApolloX CF10 Technical Data Sheet Formfutura · 2026-08 · tds
  4. ThermaX PEI 1010 Technical Data Sheet v4 3DXTech · 2026-08 · tds
  5. Prusament PEI 1010 Technical Datasheet v1.0 Prusa Polymers · 2024-09 · tds
  6. ULTEM 1010 Resin — FDM Material Data Sheet Stratasys · 2026-06 · tds
  7. ASA-CF — product page Bambu Lab US Store · 2026-08 · vendor
  8. Polymaker product catalogue Polymaker · 2026-08 · vendor
  9. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  10. Kimya PEI-1010 Amber Yellow 1.75 mm 500 g igo3d · 2026-08 · vendor
  11. Prusa Prusament PEI 1010 Natural (NFC), 1.75 mm / 500 g 3DJAKE · 2026-08 · vendor
  12. 3D4Makers product catalogue 3D4Makers · 2026-08 · vendor
  13. IEMAI 3D PEI 1010 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  14. Filastruder product catalogue Filastruder · 2026-08 · vendor
  15. IEMAI CF-ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  16. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  17. ASA — material basics Polymaker Wiki · 2026-08 · doc
  18. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  19. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  20. Prusament PEI 1010 — material page Prusa Polymers · 2026-08 · doc
  21. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  22. Carbon Fiber Filled — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  23. THERMAX PEI 1010 — product page (print recommendations) 3DXTech · 2026-08 · doc
  24. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  25. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  26. TECAPEI natural (PEI) — stock shape properties Ensinger · 2026-08 · tds
  27. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  28. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  29. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  30. Emissions of Ultrafine Particles and Volatile Organic Compounds from Commercially Available Desktop Three-Dimensional Printers with Multiple Filaments (Azimi et al.) Environmental Science & Technology 50(3) 1260-1268 · 2016-01 · paper
  31. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  32. Radel PPSU, Veradel PESU, Acudel modified PPSU Design Guide — environmental stress cracking tables Solvay Specialty Polymers · 2026-08 · tds
  33. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  34. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc